MAX17332中文資料亞德諾數(shù)據(jù)手冊(cè)PDF規(guī)格書

General Description

The MAX17332 is a 35μA IQ stand-alone charger, fuel

gauge, protector, and battery internal self-discharge

detection IC for 1-cell lithium-ion/polymer batteries. When

a voltage source is present, the IC regulates charging

by modulating the charge N-FET, using AccuCharge?

charger technology. The IC regulates charge voltage, current,

and FET temperature. Stand-alone charging is supported

by flexible configuration in nonvolatile memory. The

IC supports the following applications:

● Low-Power Charging

? 1mA to 500mA directly from universal 5V USB

? No USB identification/coordination needed

● High-Power Parallel Packs (>1000mA)

? Independently charges parallel packs

? Prevents cross-charging for parallel batteries

? Coordinates external DC-DC with alerts

? Minimizes dropout and heat

● Protection and Charging Control—pack or host side

The IC ideal diode circuit supports a quick response to

system transients and adapter removal with low voltage

drop across the CHG FET.

The IC uses the ModelGauge? m5 EZ algorithm that

combines the short-term accuracy and linearity of a

coulomb counter with the long-term stability of a voltagebased

fuel gauge to provide industry-leading accuracy.

The IC automatically compensates for cell aging, temperature,

and discharge rate while providing accurate state-ofcharge

(SOC) in milliampere-hours (mAh) or percentage

() over a wide range of operating conditions.

The IC monitors the voltage, current, temperature, and

state of the battery to provide protection against over/undervoltage,

overcurrent, short-circuit, over/undertemperature

and overcharge conditions, and internal self-discharge

protection using external high-side N-FETs to ensure

that the lithium-ion/polymer battery operates under

safe conditions which prolongs the life of the battery.

Benefits and Features

● Non-Volatile Programmable Stand-Alone Charger

? 1 Charge Current, 256 Current Settings

? 0.25 Charge Voltage, 2.42V to 4.8V, Configurable

? Optional Manual Charge Control

? FET Temperature Limit and Heat Regulation

? Prequal, SmartFull, and Step-Charging Options

? JEITA—9 Temperature Regions

● Battery Health + Programmable Safety/Protection

? Overvoltage/Overcharge Current

? Temperature Region Dependent

? Overcharge/Discharge/Short-Circuit Current

? Over/Under Temperature

? Zero-Volt or >1.8V Charging Option

? Undervoltage + SmartEmpty

● Pushbutton Wakeup/Factory Ship Mode (0.5μA)

● ModelGauge m5 EZ Algorithm

? Percent, Capacity,Time-to-Empty/Full, Age

? Cycle+? Age Forecast + Age-Scheduled Charging

● Dynamic Power—Estimates Power Capability

● SHA-256 Authentication to Prevent Cloning

● Precision Measurement Without Calibration

? Current, Voltage, Power, Time, Cycles

? Die Temperature and two Thermistors

● History Logging, User Data

● Low Quiescent Current

? FETs Enabled: 35μA Active, 21μA Hibernate

? FETs Disabled: 8μA Ship, 0.5μA Shutdown

● 2-Wire (I2C) and 1-Wire?

● 1.9 mm x 2.5 mm 15-Bump 0.5mm Pitch Wafer-Level Package (WLP)

Applications

? USB PPS and Direct Charging ? Smart Batteries and

Hybrid Supercap Batteries ? Dual Screen Smartphones,

Tablets ? Hearables, Wearables, Smartwatches ? Medical

Devices, Health, Fitness Monitors ? Handheld Radios,

Computers, Accessories ? Home/Building Automation,

Sensors, Cameras ? Parallel Battery AR/VR Systems